Kuphorbia. } CXXII, EUPHORBIACEX (BROWN). 473 
Herb; branches slender, repeatedly forked, their 
tips and a very short spur in each fork much 
thickened and knob- or tubercle-like (not so in 
any other species), corrugated with leaf-scars 
aid bearing a tuft of 4-6 linear leaves and 
1-3 involucres . . . : . 35. £. hedyotoides. 
Herbaceous annuals or perennials, or, of woody 
at the lower part, always with herbaceous 
lowering branches ; leaves well developed, always 
present. 
*Annual, prostrate or decumbent, flowering- 
leaves opposite, with a basal patch or 
half the leaf on one side of the midrib 
white, not so in any other species . - 1. &. phylloctlada. 
**Annual or perennial; stems prostrate or in a 
few species erect, usually less than 1 lin, 
thick; leaves opposite, petiolate, often 
unequal at the base, usually stipulate; 
involuere-glands 4 (rarely 5), small or 
minute, entire, with or without a petal- 
like entire or lobed or minute rim-like 
appendage, never 2-horned or with other 
processes. 
Involucres several (more than 3) or many 
together in pedunculate heads, clusters 
_ or cymes; leaves 2-9 lin. broad, only 
occasionally linear. 
Young parts of stem and branches con- 
spicuously pilose with spreading yel- 
lowish hairs; fiowers in globose 
heads. . 4, £. hirta. 
Young parts of stem and branches glabrous 
or puberulous, never with conspicuous 
spreading hairs; flowers in small 
cymes or clusters. 
Cymes with 1 pair of leaves at the 
base, sometimes minute or absent; 
involucres usually many . . 5. B. hypericifolia. 
Cymes with more than 1 pair of leaves; 
involucres usually few. . 6. EB. glaucophylla. 
{uvolucres only 1-3 together if on slender 
peduncle-like axillary branchlets with 
1-2 pairs of leaves, but mostly solitary 
or clustered and axillary or in the forks 
of the branches or terminal or on short 
axillary leafy branchlets. 
Leaves 5-12 times as long as broad, linear 
or linear-oblong; branches glabrous 
all round (except in 32, H. lupatensis, 
and sometimes in 9, E. zambesiana). 
Gland-appendages very inconspicuous 
or none. 
Plant rather densely leafy; seeds 
rather deeply ru or pitted- : 
rugose ats a : - . 17. E. polycnemoides. 
